A comment from Sumo Digital's Steve Lycett...

source: http://www.sonicstadium.org/2012/09/steve-lycett-reiterates-sasrt-wii-u-framerate-is-fine/

Thanks to SonicStadium

They were saying a few weeks ago the Wii U version's graphics were on par with the PS3 version, maybe even superior.

I was wondering where this rumour about the bad framerate came from and apparently it was when they were showing the game at Gamescom.

@Wong_Fei_Hung: heh. I'm uh... still not the most convinced by this. They didn't really say the game won't have horrible FPS. They just indicated that the FPS will probably be better than the PS3. Which means -both- versions could suffer from significant FPS issues.

Hopefully the final release builds have no such issues. :)

The target framerate must be a target for a good reason, and if they're closer to it on Wii U, it can only be a good thing. The proof will be in their pudding.